Question

我有一个搜索栏并尝试将值设置为60到180表示一个，40到190表示第二个步骤为1。

sb1 = (SeekBar) findViewById(R.id.progresss);
        sb1.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {       

            @Override       
            public void onStopTrackingTouch(SeekBar seekBar) {      
                // TODO Auto-generated method stub
                //int inVal = Integer.parseInt(String.valueOf(seekBar.getProgress()));
                //inVal =+ 70;
                //Toast.makeText(getApplicationContext(), String.valueOf(inVal),Toast.LENGTH_LONG).show();
            }       

            @Override       
            public void onStartTrackingTouch(SeekBar seekBar) {     
                // TODO Auto-generated method stub      
            }       

            @Override       
            public void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) {     
                // TODO Auto-generated method stub
                progress =+ 70;
                Toast.makeText(getApplicationContext(), String.valueOf(progress),Toast.LENGTH_LONG).show();

            }       
        });

无效。知道怎么解决吗？

Answer 1

您无法设置SeekBar的min值（始终为0），并且您无法设置SeekBar的step值（始终为1）。

要将值 60 设置为 180 ，步骤 1 ：

int step = 1;
int max = 180;
int min = 60;

// Ex : 
// If you want values from 3 to 5 with a step of 0.1 (3, 3.1, 3.2, ..., 5)
// this means that you have 21 possible values in the seekbar.
// So the range of the seek bar will be [0 ; (5-3)/0.1 = 20].
seekbar.setMax( (max - min) / step );


seekbar.setOnSeekBarChangeListener(
    new OnSeekBarChangeListener()
    {
        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {}

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {}

        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, 
            boolean fromUser) 
        {
            // Ex :
            // And finally when you want to retrieve the value in the range you
            // wanted in the first place -> [3-5]
            //
            // if progress = 13 -> value = 3 + (13 * 0.1) = 4.3
            double value = min + (progress * step);

        }
    }
);

我在代码中添加了另一个示例，以便您理解数学。

Answer 2

您可以使用以下代码设置搜索栏的最大值：

    sb1.setMax(100);

这将设置搜索栏的最大值。

但是你不能设置最小值但是你可以做一些算术来调整值。使用算术来调整应用程序所需的值。

例如，假设您希望数据值介于-50到100之间显示在SeekBar上。将SeekBar的最大值设置为150（100 - （ - 50）），然后将50添加到原始值以获取设置时应使用的数字酒吧的位置。

您可以通过此link获取更多信息。

Answer 3

seekbar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {

            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {

            }

            @Override
            public void onProgressChanged(SeekBar seekBar, int progress,
                    boolean fromUser) {

                int MIN = 5;
                if (progress < MIN) {

                    value.setText(" Time Interval (" + seektime + " sec)");
                } else {
                    seektime = progress;
                }
                value.setText(" Time Interval (" + seektime + " sec)");

            }
        });

Answer 4

为我设置最小值和最大值到搜索条的最简单方法：如果您希望值min = 60到max = 180，则等于min = 0 max = 120。所以在你的seekbar xml set属性中：

android:max="120"

min将始终为0 。

现在你只需要做你正在做的事情，添加金额以获得任何变化中的翻译价值，在这种情况下为+60。

    seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            int translatedProgress = progress + 60;
        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
        }
    });

小心使用seekbar属性android：progress，如果更改范围，则必须重新计算初始进度。如果你想要50％，max / 2，在我的例子中120/2 = 60;

Answer 5

Seek Bar有设置最大值的方法，但不能设置最小值在这里我写了一个代码来设置最小搜索条值当我们添加此代码时，您的搜索栏值不小于mim值试试这个对我来说很好的工作

/ *此方法在搜索栏值更改后调用* /

            public void onProgressChanged(SeekBar seekBar, int progress,
                boolean fromUser) {
            /* Check the current seekbar value is greather than min value*/
            if (progress < MIN_VALUE) {
                /* if seek bar value is lesser than min value then set min value to seek bar */
                seekBar.setProgress(MIN_VALUE);
            }

        }

Answer 6

处理这种情况的另一种方法是创建自定义的Seekbar，以获取每次转换真实值和SeekBar进度的经验：

import android.content.Context
import android.util.AttributeSet
import android.widget.SeekBar

//
// Require SeekBar with range [Min, Max] and INCREMENT value,
// However, Android Seekbar starts from 0 and increment is 1 by default, Android supports min attr on API 26,
// To make a increment & range Seekbar, we can do the following conversion:
//
//     seekbar.setMax((Max - Min) / Increment)
//     seekbar.setProgress((actualValue - Min) / Increment)
//     seekbar.getProgress = Min + (progress * Increment)
//
// The RangeSeekBar is responsible for handling all these logic inside the class.

data class Range(val min: Int, val max: Int, private val defaultIncrement: Int) {
    val increment = if ((max - min) < defaultIncrement) 1 else defaultIncrement
}


internal fun Range.toSeekbarMaximum(): Int = (max - min) / increment


class RangeSeekBar: SeekBar, SeekBar.OnSeekBarChangeListener {

    constructor(context: Context) : super(context)
    constructor(context: Context, attrs: AttributeSet) : super(context, attrs)

    var range: Range = Range(0, 100, 1)
        set(value) {
            field = value
            max = value.toSeekbarMaximum()
        }

    var value: Int = 0
        get() = range.min + progress * range.increment
        set(value) {
            progress = (value - range.min) / range.increment
            field = value
        }

    var onSeekBarChangeListenerDelegate: OnSeekBarChangeListener? = this

    override fun setOnSeekBarChangeListener(l: OnSeekBarChangeListener?) {
        onSeekBarChangeListenerDelegate = l
        super.setOnSeekBarChangeListener(this)
    }

    override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
        onSeekBarChangeListenerDelegate?.onProgressChanged(seekBar, value, fromUser)
    }

    override fun onStartTrackingTouch(seekBar: SeekBar?) {
        onSeekBarChangeListenerDelegate?.onStartTrackingTouch(seekBar)
    }

    override fun onStopTrackingTouch(seekBar: SeekBar?) {
        onSeekBarChangeListenerDelegate?.onStopTrackingTouch(seekBar)
    }
}

然后在您的片段中

    // init
    range_seekbar.range = Range(10, 110, 10)
    range_seekbar.value = 20

    // observe value changes
    range_seekbar.userChanges().skipInitialValue().subscribe {
        println("current value=$it")
    }

关键字：Kotlin，范围SeekBar，Rx

Answer 7

对于这样的要求，我创建了实用程序来自定义Seekbar进度，如下代码：

SeekBarUtil.class

   import android.widget.SeekBar;
import android.widget.TextView;

public class SeekBarUtil {

    public static void setSeekBar(SeekBar mSeekbar, int minVal, int maxVal, int intervalVal, final TextView mTextView, String startPrefix, String endSuffix) {

        int totalCount = (maxVal - minVal) / intervalVal;
        mSeekbar.setMax(totalCount);
        mSeekbar.setOnSeekBarChangeListener(new CustomSeekBarListener(minVal, maxVal, intervalVal) {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                //progress = ((int)Math.round(progress/interval))*interval;
                int val = min;
                if (interval == totalCount) {
                    val = max;
                } else {
                    val = min + (progress * interval);
                }
                seekBar.setProgress(progress);
                mTextView.setText(startPrefix + val + endSuffix);
            }
            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {  }

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {   }
        });

    }
}

和 CustomSeekBarListener.class

import android.widget.SeekBar;

class CustomSeekBarListener implements SeekBar.OnSeekBarChangeListener {
    int min=0,max=0,interval=1;
    int totalCount;
    public CustomSeekBarListener(int min, int max, int interval) {
        this.min = min;
        this.max = max;
        this.interval = interval;
        totalCount= (max - min) / interval;
    }
    @Override
    public void onProgressChanged(SeekBar seekBar, int i, boolean b) { }
    @Override
    public void onStartTrackingTouch(SeekBar seekBar) { }
    @Override
    public void onStopTrackingTouch(SeekBar seekBar) { }
}

，您可以像下面的代码片段一样使用它

SeekBarUtil.setSeekBar(seekbarAmountNeeded,10000,200000,5000,textAmount,"$"," PA");

Answer 8

您可以使用 Material design 滑块代替seekbar

<com.google.android.material.slider.Slider
    ...
    android:valueFrom="60"
    android:valueTo="180"
    android:stepSize="10.0"  />'

点击此处查看更多信息https://material.io/components/sliders/android

Answer 9

设置搜索栏最大值和最小值

seekbar have method that setmax(int position) and setProgress(int position)

感谢

Answer 10

复制此课程并使用自定义搜索栏：

public class MinMaxSeekBar extends SeekBar implements SeekBar.OnSeekBarChangeListener {
private OnMinMaxSeekBarChangeListener onMinMaxSeekBarChangeListener = null;
private int intMaxValue = 100;
private int intPrgress = 0;
private int minPrgress = 0;


public int getIntMaxValue() {
    return intMaxValue;
}

public void setIntMaxValue(int intMaxValue) {
    this.intMaxValue = intMaxValue;
    int middle = getMiddle(intMaxValue, minPrgress);
    super.setMax(middle);
}

public int getIntPrgress() {
    return intPrgress;
}

public void setIntPrgress(int intPrgress) {
    this.intPrgress = intPrgress;
}

public int getMinPrgress() {
    return minPrgress;
}

public void setMinPrgress(int minPrgress) {
    this.minPrgress = minPrgress;
    int middle = getMiddle(intMaxValue, minPrgress);
    super.setMax(middle);
}

private int getMiddle(int floatMaxValue, int minPrgress) {
    int v = floatMaxValue - minPrgress;
    return v;
}

public MinMaxSeekBar(Context context, AttributeSet attrs) {
    super(context, attrs);
    this.setOnSeekBarChangeListener(this);
}

public MinMaxSeekBar(Context context) {
    super(context);
    this.setOnSeekBarChangeListener(this);
}

@Override
public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
    intPrgress = minPrgress + i;
    onMinMaxSeekBarChangeListener.onMinMaxSeekProgressChanged(seekBar, intPrgress, b);
}

@Override
public void onStartTrackingTouch(SeekBar seekBar) {
    onMinMaxSeekBarChangeListener.onStartTrackingTouch(seekBar);

}

@Override
public void onStopTrackingTouch(SeekBar seekBar) {
    onMinMaxSeekBarChangeListener.onStopTrackingTouch(seekBar);
}

public static interface OnMinMaxSeekBarChangeListener {
    public void onMinMaxSeekProgressChanged(SeekBar seekBar, int i, boolean b);

    public void onStartTrackingTouch(SeekBar seekBar);

    public void onStopTrackingTouch(SeekBar seekBar);
}

public void setOnIntegerSeekBarChangeListener(OnMinMaxSeekBarChangeListener floatListener) {
    this.onMinMaxSeekBarChangeListener = floatListener;
}
}

此类Contin方法public void setMin(int minPrgress)用于设置Seek Bar的最小值此类连续方法public void setMax(int maxPrgress)用于设置Seek Bar的最大值

Answer 11

最小值总是从零开始，你无能为力。但是，当用户开始滚动它时，您可以更改其值。

这里我将max-value设置为64。这个计算很简单：我希望用户选择15分钟到16个小时的时间，然后他选择每15分钟到16个小时中的一个，清楚吗？我知道，非常简单：）

    SeekBar seekBar = (SeekBar) dialog.findViewById(R.id.seekBar);
    seekBar.setMax(64);

    seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
        float b;

        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            float des = (float) progress / 4;
            b = des;
            hours.setText(des + " hours");
        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {


        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
            hoursSelected = b;
        }
    });

Answer 12

    private static final int MIN_METERS = 100;
    private static final int JUMP_BY = 50;

    metersText.setText(meters+"");
    metersBar.setProgress((meters-MIN_METERS));
    metersBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
            // TODO Auto-generated method stub
        }
        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
            // TODO Auto-generated method stub
        }
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) {
            progress = progress + MIN_METERS;
            progress = progress / JUMP_BY;
            progress = progress * JUMP_BY;
            metersText.setText((progress)+"");
        }
    });
}

Answer 13

如果您使用的是AndroidX libraries（import androidx.preference.*），则此功能不存在任何变通方法！

    val seekbar = findPreference("your_seekbar") as SeekBarPreference
    seekbar.min = 1
    seekbar.max = 10
    seekbar.seekBarIncrement = 1

Answer 14

 Log.i(TAG, "onProgressChanged 1: " + progress);
            int progressMin = (progress * (maxPayRange - minPayRange) / 100) + minPayRange;
            Log.i(TAG, "onProgressChanged 2: " + progress);
            int progressMax = (progress * (maxPayRange - minPayRange) / maxPayRange);
            progress = (progress * (progressMax - progressMin) / 100) + progressMin;
            Log.i(TAG, "onProgressChanged 3: " + progress);
            txtWeeklyPay.setText("$" + (progress));

Answer 15

没有选项可以在搜索栏中设置最小值或最大值，因此您可以在此处使用公式来缩放您的值。

Desired_value = ( progress * ( Max_value - Min_value) / 100 ) + Min_value

我在很多例子中测试了这个公式。在你的例子中，如果progressBar是中间的（即progress = 50）而你的Min_val和Max_val分别是60和180，那么这个公式将给你Desired_value＆＃39; 120＆＃39;。

如何设置搜索栏最小值和最大值

15 个答案: